

#select1 {
    float: left;
    width:300px;
    height: 180px;
    
}
#select2 {
    float:  right;
    width: 300px;
    height: 180px;
    
}

#select1_nv1 {
    width:250px;
    height: 120px;
    overflow: auto;
}

#select2_nv2 {
    width:250px;
    height: 120px;
    overflow: auto;
}
